Agilent Technologies 8922M, S GSM manual Test 06 Audio Equipment Required Frequency Analyzer

Models: 8922M S GSM

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Verifying Performance

 

Understanding the Tests

Test 06: Audio

Equipment Required

Frequency Analyzer

HP/Agilent 8904A Option 001/002Multifunction Synthesizer

HP/Agilent 3456AVoltmeter

Theory of the Test

The HP/Agilent 8904A is used to generate accurate test signals which are analyzed by the UUT. The voltmeter is used to reduce measurement uncertainty by accurately characterizing the test signal level to predict the correct response of the UUT. The voltmeter is used in the AC level, DC level, SINAD and distortion measurements. Distortion test signals are generated by summing two sinewaves in the HP/Agilent 8904A, one as the desired signal, the other as a distortion product.

Things To Check In Case Of Problems

For frequency accuracy measurements the HP/Agilent 8904A timebase should be locked to the UUT.

The voltmeter reading is used as a reference to normalize the reading from the UUT. The output “measured” result is the actual reading from the UUT normalized by the actual reading from the voltmeter. If the voltmeter makes a faulty reading, it will normalize the actual UUT response and cause it to appear faulty also. If the front panel reading from the UUT is significantly different from the printed “measured” response, the normalization may be the cause.

Test 07: Oscilloscope Equipment Required

HP/Agilent 8903BAudio Analyzer

HP/Agilent 3456AVoltmeter

Theory of the Test

The audio analyzer is used to generate CW reference signals which are characterized by the voltmeter and fed into the UUT. The voltmeter reading is used to normalize the reading from the UUT oscilloscope. The oscilloscope measurements are taken using the UUT marker function which is set to the peak of the input sinewave.

Things To Check In Case Of Problems

The voltmeter reading is used as a reference to normalize the reading from the UUT. The output “measured” result is the actual reading from the UUT normalized by the actual reading from the voltmeter. If the voltmeter makes a faulty reading, it will normalize the actual UUT response and cause it to appear

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Agilent Technologies 8922M Test 06 Audio Equipment Required Frequency Analyzer, Test 07 Oscilloscope Equipment Required